The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Kertas kerja ini mencadangkan penggunaan kawalan kuasa penghantaran pantas (TPC) pada pautan hadapan sistem selular berbilang akses bahagian kod jujukan terus (DS-CDMA). Penyebaran ortogon diandaikan pada pemancar stesen pangkalan dan gabungan RAKE yang koheren diandaikan pada penerima stesen mudah alih. Dalam radio mudah alih selular DS-CDMA, gangguan akses berbilang (MAI) daripada sel lain dan hingar latar mengehadkan kapasiti pautan ke hadapan. Oleh itu, untuk meningkatkan kapasiti pautan, kawalan kuasa penghantaran pantas (TPC) boleh diperkenalkan, yang serupa dengan yang dibangunkan untuk pautan terbalik, iaitu, kuasa penghantaran saluran pautan hadapan dinaikkan atau diturunkan secara bebas mengikut isyarat serta-merta- hingar ke latar belakang ditambah nisbah gangguan (SIR) yang diukur di stesen mudah alih. TPC pantas cukup pantas untuk menjejaki pudar berbilang laluan serta variasi perlahan dalam kehilangan laluan bergantung jarak dan membayangi. Secara purata, kuasa penghantaran ditingkatkan kepada pengguna yang lebih dekat dengan pinggir sel supaya kesan kedua-dua MAI sel lain dan hingar latar boleh dikurangkan semasa ia diturunkan kepada pengguna yang lebih dekat dengan pusat sel. Kesan parameter TPC (selang TPC, nilai sasaran TPC, saiz langkah TPC, dll) pada kapasiti pautan ke hadapan dalam persekitaran sel tunggal dan berbilang sel dinilai melalui simulasi komputer. Ia ditunjukkan bahawa TPC pantas boleh hampir menggandakan kapasiti pautan ke hadapan dalam persekitaran berbilang sel.
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Salinan
Fumio KIKUCHI, Hirohito SUDA, Fumiyuki ADACHI, "Effect of Fast Transmit Power Control on Forward Link Capacity of DS-CDMA Cellular Mobile Radio" in IEICE TRANSACTIONS on Communications,
vol. E83-B, no. 1, pp. 47-55, January 2000, doi: .
Abstract: This paper proposes applying fast transmit power control (TPC) to the forward link of a direct sequence-code division multi-access (DS-CDMA) cellular system. Orthogonal spreading is assumed at a base station transmitter and coherent RAKE combining is assumed at a mobile station receiver. In DS-CDMA cellular mobile radio, the multiple access interference (MAI) from other cells and background noise limit the forward link capacity. Therefore, to increase the link capacity, fast transmit power control (TPC) can be introduced, which is similar to that developed for the reverse link, i. e. , the transmit powers of forward link channels are independently raised or lowered according to the instantaneous signal-to-background noise plus interference ratios (SIR's) measured at mobile stations. Fast TPC is fast enough to track the multipath fading as well as slow variations in the distance-dependence path loss and shadowing. On the average, the transmit power is increased to a user closer to the cell edge so that the effects of both other-cell MAI and background noise can be reduced while it is decreased to a user closer to the cell center. The effect of the TPC parameters (TPC interval, TPC target value, TPC step size, etc) on the forward link capacity in single- and multi-cell environments is evaluated by computer simulation. It is shown that fast TPC can almost double the forward link capacity in a multi-cell environment.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e83-b_1_47/_p
Salinan
@ARTICLE{e83-b_1_47,
author={Fumio KIKUCHI, Hirohito SUDA, Fumiyuki ADACHI, },
journal={IEICE TRANSACTIONS on Communications},
title={Effect of Fast Transmit Power Control on Forward Link Capacity of DS-CDMA Cellular Mobile Radio},
year={2000},
volume={E83-B},
number={1},
pages={47-55},
abstract={This paper proposes applying fast transmit power control (TPC) to the forward link of a direct sequence-code division multi-access (DS-CDMA) cellular system. Orthogonal spreading is assumed at a base station transmitter and coherent RAKE combining is assumed at a mobile station receiver. In DS-CDMA cellular mobile radio, the multiple access interference (MAI) from other cells and background noise limit the forward link capacity. Therefore, to increase the link capacity, fast transmit power control (TPC) can be introduced, which is similar to that developed for the reverse link, i. e. , the transmit powers of forward link channels are independently raised or lowered according to the instantaneous signal-to-background noise plus interference ratios (SIR's) measured at mobile stations. Fast TPC is fast enough to track the multipath fading as well as slow variations in the distance-dependence path loss and shadowing. On the average, the transmit power is increased to a user closer to the cell edge so that the effects of both other-cell MAI and background noise can be reduced while it is decreased to a user closer to the cell center. The effect of the TPC parameters (TPC interval, TPC target value, TPC step size, etc) on the forward link capacity in single- and multi-cell environments is evaluated by computer simulation. It is shown that fast TPC can almost double the forward link capacity in a multi-cell environment.},
keywords={},
doi={},
ISSN={},
month={January},}
Salinan
TY - JOUR
TI - Effect of Fast Transmit Power Control on Forward Link Capacity of DS-CDMA Cellular Mobile Radio
T2 - IEICE TRANSACTIONS on Communications
SP - 47
EP - 55
AU - Fumio KIKUCHI
AU - Hirohito SUDA
AU - Fumiyuki ADACHI
PY - 2000
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E83-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2000
AB - This paper proposes applying fast transmit power control (TPC) to the forward link of a direct sequence-code division multi-access (DS-CDMA) cellular system. Orthogonal spreading is assumed at a base station transmitter and coherent RAKE combining is assumed at a mobile station receiver. In DS-CDMA cellular mobile radio, the multiple access interference (MAI) from other cells and background noise limit the forward link capacity. Therefore, to increase the link capacity, fast transmit power control (TPC) can be introduced, which is similar to that developed for the reverse link, i. e. , the transmit powers of forward link channels are independently raised or lowered according to the instantaneous signal-to-background noise plus interference ratios (SIR's) measured at mobile stations. Fast TPC is fast enough to track the multipath fading as well as slow variations in the distance-dependence path loss and shadowing. On the average, the transmit power is increased to a user closer to the cell edge so that the effects of both other-cell MAI and background noise can be reduced while it is decreased to a user closer to the cell center. The effect of the TPC parameters (TPC interval, TPC target value, TPC step size, etc) on the forward link capacity in single- and multi-cell environments is evaluated by computer simulation. It is shown that fast TPC can almost double the forward link capacity in a multi-cell environment.
ER -